如图,点
是
平分线上的一点,过点
作
交
于点
,若
,
,求点
到
的距离
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f083d5949537e46bb0547d8c0c2174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6131160eaee962470abc7771df265c6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd3fd00798e7ec50afafe7fa7a4f42e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/13/a698fcab-b473-47b3-9f91-e56ff934fa85.png?resizew=163)
更新时间:2023-02-11 19:32:04
|
相似题推荐
解答题-问答题
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【推荐1】如图,O是直线
上一点,
是直线
上方过点O的一条射线,
.若射线
在
内,
的大小为
.射线
在直线
上方,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/94881efa-e85a-4b86-9e7e-1f0350c66ab8.png?resizew=128)
(1)用t的代数式表示.
(2)当
时,求t 的值;
(3)若射线
在
内,且
,当
,
,
三条射线中的一条射线是另两条射线组成的夹角的平分线时,请求出t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c29fc091773360007a4346bd7b4803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc50dfc866413213afb279a34893a53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92f279be7c8a11dcd2c0a97116bdcbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c2c19dc32acd2478d9b114a3a6b9ba9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b090804dba52f520ddb928b2d3f75181.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/94881efa-e85a-4b86-9e7e-1f0350c66ab8.png?resizew=128)
(1)用t的代数式表示.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18eaed610d6c54cee69978380f6853f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c211a24e544ded208ea0a2a2aa59bf.png)
(3)若射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3a3bf63440a2fdd769162516fb0e1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5beaa08ed4c7d9d1c39c526e5ff135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
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【推荐2】如图,将一副三角板按照如图1所示的位置放置在直线
上,现将含
角的三角板
绕点 O逆时针旋转
,在这个过程中.
(1)如图2, 当
平分
时, 试问
是否也平分
, 请说明理由.
(2)当
所在的直线平分
时, 求
的度数;
(3)试探究.
与
之间满足怎样的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3201d3796ed9a29338aac25245a7c8e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/6fdead41-0c3b-45da-8442-42a692e6a9c1.png?resizew=371)
(1)如图2, 当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
(3)试探究.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
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解答题-问答题
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【推荐1】动手操作题:如图,点A在∠O的一边OA上.按要求画图并填空:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/e790932a-41cb-4509-9ac1-2e14fcc6fe08.png?resizew=211)
(1)过点A画直线AB⊥OA,与∠O的另一边相交于点B;
(2)过点A画OB的垂线段AC,垂足为点C;
(3)过点C画直线CD∥OA,交直线AB于点D;
(4)∠CDB= °.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/e790932a-41cb-4509-9ac1-2e14fcc6fe08.png?resizew=211)
(1)过点A画直线AB⊥OA,与∠O的另一边相交于点B;
(2)过点A画OB的垂线段AC,垂足为点C;
(3)过点C画直线CD∥OA,交直线AB于点D;
(4)∠CDB= °.
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解答题-证明题
|
适中
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【推荐2】如图,在
中,
,以
为直径的半圆
分别交
,
于点
,
,连结
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/4bc825e1-7e3e-4048-8e47-ce40cadca937.png?resizew=161)
(1)求证:
.
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/4bc825e1-7e3e-4048-8e47-ce40cadca937.png?resizew=161)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1165fddd1ed41b62961e31d6f3913ba.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d610f2335eb148d2f670083fe070566c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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名校
【推荐1】如图,
,
为
、
的平分线的交点,
于
,且
,求
与
之间的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9290b887e88e8d2fd774a7314e2ca73a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b836a0f9c491f85767e8f6695576fd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93af9774200946261f0ccba3e6eeba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/ffc9701f-5abb-46dd-92f1-ef98151f1ba0.png?resizew=217)
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解答题-作图题
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适中
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【推荐2】阅读下面材料:小明遇到一个问题:如图,∠MON,点A在射线OM上,点B在∠MON内部,用直尺和圆规作点P,使点P同时满足下列两个条件(要求保留作图痕迹,不必写出作法):
a.点P到A,B两点的距离相等;b.点P到∠MON的两边的距离相等.
小明的作法是:
①连接AB,作线段AB的垂直平分线交AB于E,交ON于F;
②作∠MON的平分线交EF于点P.
所以点P即为所求.
![](https://img.xkw.com/dksih/QBM/2019/8/2/2260126252793856/2263546576887808/STEM/44672f6f1c20465398ab2572179b421a.png?resizew=180)
根据小明的尺规作图过程,
(1)使用直尺和圆规,补全图形;
(2)证明:∵EF垂直平分线段AB,点P在直线EF上,
∴PA= .
∵OP平分∠MON,
∴点P到∠MON的两边的距离相等 (填推理的依据).所以点P即为所求.
a.点P到A,B两点的距离相等;b.点P到∠MON的两边的距离相等.
小明的作法是:
①连接AB,作线段AB的垂直平分线交AB于E,交ON于F;
②作∠MON的平分线交EF于点P.
所以点P即为所求.
![](https://img.xkw.com/dksih/QBM/2019/8/2/2260126252793856/2263546576887808/STEM/44672f6f1c20465398ab2572179b421a.png?resizew=180)
根据小明的尺规作图过程,
(1)使用直尺和圆规,补全图形;
(2)证明:∵EF垂直平分线段AB,点P在直线EF上,
∴PA= .
∵OP平分∠MON,
∴点P到∠MON的两边的距离相等 (填推理的依据).所以点P即为所求.
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解答题-证明题
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名校
【推荐1】已知:△ABC,点D、E分别在BC、AC上,连接AD、DE,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9edf5aff3e25b37f437f83a6d149802c.png)
(1)如图1,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807407213674496/2810585289588736/STEM/c46f746b-710b-48bd-8e4b-6e5327f0a7d6.png)
(2)如图2,
,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb576337b81841d9f1924c8b45c23aba.png)
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807407213674496/2810585289588736/STEM/fd38b923-26d5-4026-a24b-de204cf656f4.png)
(3)如图3,在(2)的条件下,
,
,
,求DE的长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9edf5aff3e25b37f437f83a6d149802c.png)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807407213674496/2810585289588736/STEM/c46f746b-710b-48bd-8e4b-6e5327f0a7d6.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b44e92de413012a5e821a9494c653207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb576337b81841d9f1924c8b45c23aba.png)
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807407213674496/2810585289588736/STEM/fd38b923-26d5-4026-a24b-de204cf656f4.png)
(3)如图3,在(2)的条件下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432cce1481829c4dfe2bd557f6e9aa4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271ba591a8451e5066e9181c40c67085.png)
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807407213674496/2810585289588736/STEM/3fd3bfb0-1368-4fca-9199-246f2974625f.png)
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解答题-问答题
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【推荐2】如图,△ABC中,AB=BC,CE∥AB,以AB为直径作⊙O,当CE是⊙O的切线时,切点为D.
![](https://img.xkw.com/dksih/QBM/2019/12/21/2359747009306624/2360848830914560/STEM/2d98c486253042228aa1904e5178bc09.png?resizew=150)
(1)求:∠ABC的度数;
(2)若CD=3,求AC的长度.
![](https://img.xkw.com/dksih/QBM/2019/12/21/2359747009306624/2360848830914560/STEM/2d98c486253042228aa1904e5178bc09.png?resizew=150)
(1)求:∠ABC的度数;
(2)若CD=3,求AC的长度.
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